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Finding the Fourth Proportional to 556.36, 830.56 and 483.48

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Solution

The fourth proportional to 556.36, 830.56 and 483.48 is: 721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.36 : 830.56 = 483.48 : x
  2. Step 2: Convert to fraction form
    556.36/830.56 = 483.48/x
  3. Step 3: Cross multiply
    556.36x = 830.56 × 483.48
  4. Step 4: Simplify right side
    556.36x = 401,559.15
  5. Step 5: Solve for x
    x = 401,559.15/556.36
  6. Step 6: Final answer
    x = 721.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.